Vehicle Stability Control System (W/ Vdim) Abs Warning Light Does Not Come On

Brake. Lexus Is250, Is220D. Gse20 Ale20
Brake Control. Lexus Is250, Is220D. Gse20 Ale20

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK CAN COMMUNICATION SYSTEM

CHECK MULTIPLEX COMMUNICATION SYSTEM

CHECK ABS WARNING LIGHT

INSPECT COMBINATION METER ASSEMBLY

VEHICLE STABILITY CONTROL SYSTEM (w/ VDIM) - ABS Warning Light does not Come ON


DESCRIPTION

The skid control ECU is connected to the combination meter via CAN and multiplex communications.

WIRING DIAGRAM


Lexus Is250, Is220D. Gse20 Ale20.Brake Control.Vehicle Stability Control System (W/ Vdim).Vehicle Stability Control System (W/ Vdim)  Abs Warning Light Does Not Come On


INSPECTION PROCEDURE

NOTICE:
When replacing the skid control ECU, perform zero point calibration and store system information (Click here).
1.CHECK CAN COMMUNICATION SYSTEM
  1. Check if the CAN communication system DTC is output (Click here for LHD, or Click here for RHD).

    Result:

    Condition
    Proceed to
    DTC is not output
    A
    DTC is output
    B


B
INSPECT CAN COMMUNICATION SYSTEM
A


2.CHECK MULTIPLEX COMMUNICATION SYSTEM
  1. Check if the multiplex communication system DTC is output (Click here).

    Result:

    Condition
    Proceed to
    DTC is not output
    A
    DTC is output
    B


B
INSPECT MULTIPLEX COMMUNICATION SYSTEM
A


3.CHECK ABS WARNING LIGHT
  1. Disconnect the skid control ECU connector.

  1. Turn the engine switch on (IG).

  1. Check that the ABS warning light comes on.

    OK:
    ABS warning light comes on.
    HINT:
    If troubleshooting has been carried out according to the Problem Symptoms Table, refer back to the table and proceed to the next step before replacing the part (Click here).


OK
REPLACE SKID CONTROL ECU
NG


4.INSPECT COMBINATION METER ASSEMBLY
  1. Turn the engine switch off.

  1. Reconnect the skid control ECU connector.

  1. Perform Active Test of the combination meter (meter CPU) using the intelligent tester (Click here).

    OK:
    The ABS warning light turns on or off in accordance with the intelligent tester.
    HINT:
    If troubleshooting has been carried out according to the Problem Symptoms Table, refer back to the table and proceed to the next step (Click here).


NG
REPLACE COMBINATION METER ASSEMBLY
OK

REPLACE SKID CONTROL ECU